Warble fly infestation and climate

Tarry, DW

doi:10.1136/vr.106.26.559

Cited by 24 publications

(17 citation statements)

References 0 publications

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“…Indeed, the husbandry system is known to exert a major effect on both prevalence and intensity of infection in bovine hypodermosis since extensive husbandry systems are the most favorable for the occurrence of this myiasis, because flies have more chances to contact the animal. This fact agrees with several previous studies [7,9,[27][28][29][30] . Moreover, the autochthonous local breed Atlas Brown which is raised under semi-extensive and extensive husbandry systems presented higher seroprevalence than dairy breeds like the Montbéliard that is mostly kept intensively.…”

Section: Discussionsupporting

confidence: 94%

“…In this study the results showed that WFI prevails in all the studied departments of Northern Algeria, although in humid areas have more risk to become infected than in semi-arid areas, indicating more favorable conditions for the development and survival of pupal and adult stages [27] . Similar results were recorded by Sahibi et al [16] in Morocco who found higher seropositivity in sub-humid areas (60%) in relation to semi-arid areas (50%).…”

Section: Discussionmentioning

confidence: 50%

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Cezayir - Mağrip’te Bovine Hipodermozisi: İndirek ELİSA İle Sero-epidemiyolojik Bir Çalışma

Saidani¹,

López-Sández²,

Díaz³

et al. 2016

Kafkas Univ Vet Fak Derg

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During May-July 2014, a total of 837 cattle serum samples were collected from 4 departments in northern Algeria and tested for the presence of anti-Hypoderma antibodies by indirect ELISA. Warble counts and some intrinsic (age, breed, sex) and extrinsic factors (location, husbandry system) were also considered. The overall seroprevalence by indirect ELISA was 49.8%, whereas by clinical inspection only 25.7% of the animals were infested. Except for the sex, all the factors included in the study were significantly associated with seroprevalence. The husbandry system was identified as the factor with more influence in seroprevalence, so cattle kept under extensive (79%) or semi-extensive (50.6%) husbandry systems have 74.10 and 18.13 more risk than those under an intensive system (5.8%), respectively. Both the seroprevalence and the intensity of infection are inversely related with the age of the animals. So, the youngest animals (˂3 years) are less frequently infested but display the highest intensities of infection. The seroprevalence detected in northern Algeria reflects a high exposition of cattle to Hypoderma spp. To minimize the economic losses due to this myiasis it is essential to establish control programs based on serological surveillance prior to the administration of macrocyclic lactones. Keywords

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Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 50%

Cezayir - Mağrip’te Bovine Hipodermozisi: İndirek ELİSA İle Sero-epidemiyolojik Bir Çalışma

Saidani¹,

López-Sández²,

Díaz³

et al. 2016

Kafkas Univ Vet Fak Derg

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“…The overall prevalence in the farms was 18.1%, with an intensity of infestation of 7.5±4. 15 intensive, semiextensive and extensive management, in ascending prevalence order (Fig. 2).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, it is usual to notice a wide variation in the prevalence of WFI among different parts of the world and even within the same country [14] . This variation in the rate of prevalence of WFI in different areas might be due to the differences in the environmental conditions (topography of the land, season, humidity, temperature, rain fall, wind velocity) affecting the development of the warble flies [15] . In our survey, H. bovis (45%) and H. lineatum (55%) were found infesting cattle, although there was a slight predominance of H. lineatum.…”

Section: Discussionmentioning

confidence: 99%

Kuzey-Orta Cezayir’de Sığır Hypodermosis: Yaygınlık, Enfeksiyon Yoğunluğu ve Risk Faktörleri

Saidani¹,

López-Sández²,

Mekademi³

et al. 2014

Kafkas Univ Vet Fak Derg

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From January to June 2009 the biggest livestock market and five bovine farms of Bejaia department (Northcentral Algeria) were visited in order to undertake an epidemiological survey on warble fly infestation (WFI). A total of 3.442 and 226 bovines were clinically examined in both market and farms, respectively. The prevalence was higher in farms (18.1%) than in the animal market (3.7%). On the contrary, the intensity of infection was highest in the market (12.61±7.78 vs 7.5±4.15). The husbandry system exerts a significant effect on the prevalence of WFI, being the prevalence highest under extensive management. However, cattle age, sex and breed did not exert a significant effect on WFI prevalence. Breed was the only factor influencing the intensity of infection; the Montbeliarde breed was the most heavily infested as compared to the crossbreed and the local breed. Keywords: Bovine hypodermosis, Prevalence, Intensity, Risk factors, North-central Algeria Kuzey-Orta Cezayir'de Sığır Hypodermosis: Yaygınlık, Enfeksiyon Yoğunluğu ve Risk Faktörleri ÖzetBüvelek sineği enfestasyonu (WFI) üzerine bir epidemiyolojik araştırma gerçekleştirmek üzere Ocak-Haziran 2009 döneminde Bejaia Bölgesi'nin (Kuzey-Orta Cezayir) en büyük hayvan pazarı ve beş sığır çiftliği ziyaret edildi. Pazar ve marketlerde sırası ile toplam 3.442 ve 226 sığır klinik olarak muayene edildi. Prevalansın çiftliklerde (%18.1) hayvan pazarına gore (%3.7) daha yüksek olduğu belirlendi. Fakat, enfeksiyonun şiddetinin pazarda (12.61±7.78 vs 7.5±4.15) en yüksek olarak gözlemlendi. Ekstansif yetiştiricilikte en yüksek yaygınlıklta olan WFI prevalansı üzerine yetiştirme sistemi önemli bir etki göstermektedir. Ancak, sığır yaş, cinsiyet ve ırk özelliklerinin WFI yaygınlığı üzerinde önemli bir etki göstermediği belirlendi. Enfeksiyon yoğunluğunu etkileyen tek faktor olarak ırk özelliği bulundu; melez ve yerli ırk ile karşılaştırıldığında Montbeliarde ırkının en ağır enfestasyona maruz kaldığı gözlemlendi.

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“…Hatching requires three to seven days [20]. Heavy rainfall increases the odds of infection, as reported by Haine, contrary to the literature [21][22][23]9]. In Pakistan, there are different land cover types.…”

Section: Factors Considered In Risk Analysismentioning

confidence: 94%

Risk mapping of bovine hypodermosis using geographical information system (GIS) in cattle of subtropical region, Pakistan

Khan

Ahmed

Fontán

et al. 2015

J Infect Dev Ctries

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Introduction: Hypodermosis is an ectoparasitic disease of cattle caused by Hypoderma lineatum and Hypoderma bovis. It is an important health problem of cattle, leading to considerable economic losses. There are various factors that are involved in the spread of this disease such as herd size, location, temperature, humidity, and precipitation. Methodology: Blood samples from 112 herds were collected to determine the presence of Hypoderma spp. infestation. For these herds, size and location were determined; temperature, humidity, and precipitation data were obtained from meteorological stations; and topographic features were obtained from existing maps and through field work. A regression analysis was then used to generate a risk factor analysis profile for hypodermosis and geographic information system (GIS) was used to map the risks. Results: The GIS map developed showed the degree of infestation in different geographical locations at district and village levels. Cluster analysis demonstrated that hypodermosis prevalence varied within zones and across zones. The regression analysis showed that the temperature in the months of January, February, March, August, and November, and the precipitation in September and October had significant results (p < 0.05) when all the risks factors were analyzed. Conclusions: It is concluded that different ecological factors have an important impact on the intensity and infestation rate of hypodermosis across the globe. The present study might be used to control and eradicate the hypodermosis across the globe.

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Warble fly infestation and climate

Cited by 24 publications

References 0 publications

Cezayir - Mağrip’te Bovine Hipodermozisi: İndirek ELİSA İle Sero-epidemiyolojik Bir Çalışma

Cezayir - Mağrip’te Bovine Hipodermozisi: İndirek ELİSA İle Sero-epidemiyolojik Bir Çalışma

Kuzey-Orta Cezayir’de Sığır Hypodermosis: Yaygınlık, Enfeksiyon Yoğunluğu ve Risk Faktörleri

Risk mapping of bovine hypodermosis using geographical information system (GIS) in cattle of subtropical region, Pakistan

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